C# 程序查找两个或多个字典的并集\
csharpprogrammingserver side programming更新于 2025/9/17 21:05:00
首先，设置两个字典 −
Dictionary < string, int > dict1 = new Dictionary < string, int > ();
dict1.Add("water", 1);
dict1.Add("food", 2);
Dictionary < string, int > dict2 = new Dictionary < string, int > ();
dict2.Add("clothing", 3);
dict2.Add("shelter", 4);
现在，创建 HashSet 并使用 UnionsWith() 方法查找上述两个字典之间的并集 −
HashSet < string > hSet = new HashSet < string > (dict1.Keys); hSet.UnionWith(dict2.Keys);
以下是完整代码 −
示例
using System;
using System.Collections.Generic;
public class Program {
public static void Main() {
Dictionary < string, int > dict1 = new Dictionary < string, int > ();
dict1.Add("water", 1);
dict1.Add("food", 2);
Dictionary < string, int > dict2 = new Dictionary < string, int > ();
dict2.Add("clothing", 3);
dict2.Add("shelter", 4);
HashSet < string > hSet = new HashSet < string > (dict1.Keys);
hSet.UnionWith(dict2.Keys);
Console.WriteLine("Union of Dictionary...");
foreach(string val in hSet) {
Console.WriteLine(val);
}
}
}
输出
Union of Dictionary... water food clothing shelter
